Princess Eugenie, who previously hit the headlines with her close relationship with a male friend and her fashion sense of neon pink eyelashes, appeared to abandon the traditional buttoned-up look for a daring plunge-neck frock last night.

Sarah Ferguson, who was the Duchess, was enjoying a little end-of-summer time with her daughters before they all go their own ways this autumn. Joining them was Beatrice’s American boyfriend Dave Clark.